after i almost beat mine up the same 1, i flew it into bench in gym after that i count get it off the ground i had to go on-line a look at the potions of the top blades on-line and on the box they all look even not the main blade but the 2 little nubby blade top of them i don't know what they call them yet I'm new to all of this but see if it works i put the 2 blades even and it worked for me word 2 the wise get a crash kit if u don't have 1 good luck [8D]